William c



(No Model.)

-W. G. WINPIBL-D.

PRESSURE BLOWER. No. 355.111; Patented Dec. 28, 1886 WITNESSES wgwww l/VVE/VTOI? I V mm UNITED STATES PATENT QFEICE.

WILLIAM G. WINFIELD, OF WARREN, OHIO, ASSIGNOR OF TWO-THIRDS TO ROLLIN A. OOBB AND ORRIS R. GRIMMESEY, OF SAME PLACE.

PRESSURE-BLOWER.

SPECIFICATION forming part of Letters Patent No. 355,111, dated December 28, 1886.

Application filed April 3, 1886. Serial No.191,675. (No model.)

- which it pertains to make and use the same.

My invention relates to improvements in pressure-blowers, in which the piston is located in the pressure-chamber, and the inverted rims, respectively, of the piston and of the tank inclosing the pressure-chamber are fluid-sealed in a sealing-chamber, the latter being formed by upwardly-projecting walls that below are joined to a head in common, the space inclosed by the inner wall forming an induction airchamber, to the end that the device is rendered more compact and convenient and is made at a less initial cost than pressure-blowers heretofore in use.

In the accompanying drawing the figure is a side elevation of my improved pressure-blower, parts being broken away to show the internal construction.

The body of the blower consists of a conical head, A, to which are joined the upwardlyprojecting walls A and A the space between these walls forming a sealing-chamber, A in which respectively operate and are fluid-sealed the downwardly-projecting rims B and C, respectively, of the tank B and piston 0. Both tank and piston have preferably conical heads, as shown, to give the necessary stiflness and strength to enable them to withstand the internal pressure. The tank B inoloses the pressure-chamber B. p

The parts thus far described are usually made of sheet metal, thicker or thinner, according to the size of the blower.

The head A is provided with a valve, a, and the head of the piston O with a valve, 0, both valves opening upward. A piston-rod, D, passes through the apex of the head A, where it may be provided witha stuffing-box,

a. The piston-rod at c is joined to the center of the piston-head, as shown.

It will be seen that the piston-rod is operated from below, and the piston being located inside the tank B, as aforesaid, requires no extra room.

Heretofore with pressure-blowers the tank B, or whatever served as an equivalent, was usually placed in a separate sealing-chamber, container, or whatever the arrangement might have been, thereby requiring about double the space occupied by my improved blower, the

latter, therefore, being made at a greatly-reduced initial cost. A discharging-pipe, E, leads from the inside of the pressure-chamber, and preferably through the sealing-chamber, and in such case the wall A and rim 0 are usually curved, as shown, so as to make room for the pipe. The exact location of the pipe is not, however, essential, and might, if preferred, be made in two parts, the one part extending up through the head A inside the induction-chamber, and the other part secured to and extending through the head of the pis-' ton, the two parts of the pipe being arranged in line, and the end of one pipe operating inside of the other pipe, forming a slip-joint. There would be nothing gained by such construction, and as a slip-joint is somewhat objectionable, the construction shown is considered preferable.

The piston-rod extending below is usually an advantage, especially as would be the case with small blowers operated by foot-power, as a treadle for operating the blower could be attached to the floor. The device as shown is believed to be in the most compact and desirable form attainable, and can be made at a comparatively small initial cost.

What I claim is 1. In a pressure-blower, the combination, wit-h a head having the upwardly-projecting walls A A located a sufficient distance apart to form a sealing-chamber, of the piston, the lower end of which rests within the sealingchamber, and the tank closed at its upper end and open at its lower end, and inclosing said piston, the lower end of said tank also resting within the sealing-chamber.

2. In a pressure-blower, the combination, with the body of the blower, the same consist ing of inner and outer walls joined below to a head in common, forming sealing and induction chambers, as indicated, of a piston and ICO tank, the former located in the pressure-chamher of the latter, both tank and piston having depending rims operating and fluid-sealed in the same sealingchamber, substantially as set forth.

3. In a pressure-blower, the combination, with inner and outer upright wallsj oined below to a head in common, said walls inclosinga sealing-chamber, and the inner walls inclosing an induction-chamber, of apiston and tank, the former located inside the pressure-chamber of the latter, both tank and piston having depending rims operating and fluid-sealed in the said sealing-chamber, a valve in the pistonhead, a Valve in the head A, and a dischargingpipe leading from the pressure-chamber and preferably through the sealing-chamber, sub stantially as set forth.

4. The combination, with the body of the blower, the same consisting of inner and outer walls joined below to a head in common, forming sealing and induction chambers, of a piston and tank, the former located in the pressurechamber of the latter, and both tank and piston operating and fluid-sealed in the-same sealing-chamber, and a piston-rod extending down through the inductionchamber, substantially as set forth.

5. In a pressure-blower, the combination, with the body of the blower, the same consisting of inner and outer walls joined below to a head in common, forming sealing and in- 

